Add caching to fetch wrapper

app/crawler/specificCrawlers/saljic.js

@@ -160,7 +160,7 @@ class SaljicCrawler {
     }
 
     try {
-      const res = await fetch(url);
+      const res = await fetch(url, {}, false);
       const body = await res.text();
       const $ = cheerio.load(body);
       let hrefs = [];